/* * various OS-feature replacement utilities * copyright (c) 2000, 2001, 2002 Fabrice Bellard * * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef AVFORMAT_OS_SUPPORT_H #define AVFORMAT_OS_SUPPORT_H /** * @file * miscellaneous OS support macros and functions. */ #include "config.h" #include <sys/stat.h> #ifdef _WIN32 #if HAVE_DIRECT_H #include <direct.h> #endif #if HAVE_IO_H #include <io.h> #endif #endif #ifdef _WIN32 # include <fcntl.h> # include <stdint.h> # ifdef lseek # undef lseek # endif #define lseek … # ifdef stat # undef stat # endif #define stat … /* * The POSIX definition for the stat() function uses a struct of the * same name (struct stat), that why it takes this extra effort for * redirecting/replacing the stat() function with our own one which * is capable to handle long path names on Windows. * The struct below roughly follows the POSIX definition. Time values * are 64bit, but in cases when _USE_32BIT_TIME_T is defined, they * will be set to values no larger than INT32_MAX which corresponds * to file times up to the year 2038. */ struct win32_stat { _dev_t st_dev; /* ID of device containing file */ _ino_t st_ino; /* inode number */ unsigned short st_mode; /* protection */ short st_nlink; /* number of hard links */ short st_uid; /* user ID of owner */ short st_gid; /* group ID of owner */ _dev_t st_rdev; /* device ID (if special file) */ int64_t st_size; /* total size, in bytes */ int64_t st_atime; /* time of last access */ int64_t st_mtime; /* time of last modification */ int64_t st_ctime; /* time of last status change */ }; # ifdef fstat # undef fstat # endif #define fstat … #endif /* defined(_WIN32) */ #ifdef __ANDROID__ # if HAVE_UNISTD_H # include <unistd.h> # endif # ifdef lseek # undef lseek # endif #define lseek … #endif static inline int is_dos_path(const char *path) { … } #if defined(_WIN32) #ifndef S_IRUSR #define S_IRUSR … #endif #ifndef S_IWUSR #define S_IWUSR … #endif #endif #if CONFIG_NETWORK #if defined(_WIN32) #define SHUT_RD … #define SHUT_WR … #define SHUT_RDWR … #else #include <sys/socket.h> #if !defined(SHUT_RD) /* OS/2, DJGPP */ #define SHUT_RD … #define SHUT_WR … #define SHUT_RDWR … #endif #endif #if !HAVE_SOCKLEN_T typedef int socklen_t; #endif /* most of the time closing a socket is just closing an fd */ #if !HAVE_CLOSESOCKET #define closesocket … #endif #if !HAVE_POLL_H typedef unsigned long nfds_t; #if HAVE_WINSOCK2_H #include <winsock2.h> #endif #if !HAVE_STRUCT_POLLFD struct pollfd { int fd; short events; /* events to look for */ short revents; /* events that occurred */ }; /* events & revents */ #define POLLIN … #define POLLOUT … #define POLLRDNORM … #define POLLWRNORM … #define POLLRDBAND … #define POLLWRBAND … #define POLLPRI … /* revents only */ #define POLLERR … #define POLLHUP … #define POLLNVAL … #endif int ff_poll(struct pollfd *fds, nfds_t numfds, int timeout); #define poll … #endif /* HAVE_POLL_H */ #endif /* CONFIG_NETWORK */ #ifdef _WIN32 #include <stdio.h> #include <windows.h> #include "libavutil/mem.h" #include "libavutil/wchar_filename.h" #define DEF_FS_FUNCTION … DEF_FS_FUNCTION(unlink, _wunlink, _unlink) DEF_FS_FUNCTION(mkdir, _wmkdir, _mkdir) DEF_FS_FUNCTION(rmdir, _wrmdir , _rmdir) static inline int win32_access(const char *filename_utf8, int mode) { wchar_t *filename_w; int ret; if (get_extended_win32_path(filename_utf8, &filename_w)) return -1; if (!filename_w) goto fallback; ret = _waccess(filename_w, mode); av_free(filename_w); return ret; fallback: return _access(filename_utf8, mode); } static inline void copy_stat(struct _stat64 *crtstat, struct win32_stat *buf) { buf->st_dev = crtstat->st_dev; buf->st_ino = crtstat->st_ino; buf->st_mode = crtstat->st_mode; buf->st_nlink = crtstat->st_nlink; buf->st_uid = crtstat->st_uid; buf->st_gid = crtstat->st_gid; buf->st_rdev = crtstat->st_rdev; buf->st_size = crtstat->st_size; buf->st_atime = crtstat->st_atime; buf->st_mtime = crtstat->st_mtime; buf->st_ctime = crtstat->st_ctime; } static inline int win32_stat(const char *filename_utf8, struct win32_stat *buf) { struct _stat64 crtstat = { 0 }; wchar_t *filename_w; int ret; if (get_extended_win32_path(filename_utf8, &filename_w)) return -1; if (filename_w) { ret = _wstat64(filename_w, &crtstat); av_free(filename_w); } else ret = _stat64(filename_utf8, &crtstat); copy_stat(&crtstat, buf); return ret; } static inline int win32_fstat(int fd, struct win32_stat *buf) { struct _stat64 crtstat = { 0 }; int ret; ret = _fstat64(fd, &crtstat); copy_stat(&crtstat, buf); return ret; } static inline int win32_rename(const char *src_utf8, const char *dest_utf8) { wchar_t *src_w, *dest_w; int ret; if (get_extended_win32_path(src_utf8, &src_w)) return -1; if (get_extended_win32_path(dest_utf8, &dest_w)) { av_free(src_w); return -1; } if (!src_w || !dest_w) { av_free(src_w); av_free(dest_w); goto fallback; } ret = MoveFileExW(src_w, dest_w, MOVEFILE_REPLACE_EXISTING); av_free(src_w); av_free(dest_w); // Lacking proper mapping from GetLastError() error codes to errno codes if (ret) errno = EPERM; return ret; fallback: /* filename may be be in CP_ACP */ #if !HAVE_UWP ret = MoveFileExA(src_utf8, dest_utf8, MOVEFILE_REPLACE_EXISTING); if (ret) errno = EPERM; #else /* Windows Phone doesn't have MoveFileExA, and for Windows Store apps, * it is available but not allowed by the app certification kit. However, * it's unlikely that anybody would input filenames in CP_ACP there, so this * fallback is kept mostly for completeness. Alternatively we could * do MultiByteToWideChar(CP_ACP) and use MoveFileExW, but doing * explicit conversions with CP_ACP is allegedly forbidden in windows * store apps (or windows phone), and the notion of a native code page * doesn't make much sense there. */ ret = rename(src_utf8, dest_utf8); #endif return ret; } #define mkdir … #define rename … #define rmdir … #define unlink … #define access … #endif #endif /* AVFORMAT_OS_SUPPORT_H */
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